Tailoring Graphene to Achieve Negative Poisson's Ratio Properties

@article{Grima2015TailoringGT,
  title={Tailoring Graphene to Achieve Negative Poisson's Ratio Properties},
  author={Joseph N. Grima and Szymon Winczewski and Luke Mizzi and Michael Grech and Reuben Cauchi and Ruben Gatt and Daphne Attard and Krzysztof W. Wojciechowski and Jaroslaw Rybicki},
  journal={Advanced Materials},
  year={2015},
  volume={27}
}
Graphene can be made auxetic through the introduction of vacancy defects. This results in the thinnest negative Poisson's ratio material at ambient conditions known so far, an effect achieved via a nanoscale de-wrinkling mechanism that mimics the behavior at the macroscale exhibited by a crumpled sheet of paper when stretched. 

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